Paper-bag machine



l4 SheetsSheet 1.

S S I N O H. .E m w WM &G Zm R H R 0% L A W a d 0 M O W Witnesses l4 Sheets-Sheet 2. ISS.

(No Model.)

W. A. LORENZ & W. H. HON

. PAPER BAG MACHINE.

No. 361,951. Patented Apr. 26, 1887.

Wilt/2 68868 Z iQvd a/ w/d/q (No Model.) 14 Sheets-Sheet 3. W. A. LORENZ & W. H. I-IONISS.

PAPER BAG MACHINE.

Patented A r. 26, 1887.

Inventors:

Witnesses:

(No Model.) 14 Sheets-Sheet 4.

W. A. LORENZ & W. H. HONISS. PAPER BAG MACHINE.

No. 361,951. Patented Apr. 26, 1887.

Fig.1?

Witnesgeiiwc @I/nventors:

? Wflm ffl (No Model.) 14 Sheets-Sheet 5. W. A. LORENZ & W. H. HONISS.

PAPER BAG MACHINE.

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mm o 4 1 1 a m 8 1 0 m gt N WW W (No Model.) 14 She etsSheet 6.

W. A. LORENZ & W. H. HONISS. PAPER BAG MACHINE.

No. 361,951. Patented Apn. 26, 1887.

| 1 I I i Witnesses: 1 Inventors:

(No Model.) 14 Sheets-Sheet 7.

*W. A. LORENZ & W. H. HONISS.

' PAPER BAG MACHINE.

.No. 361,951. Patented Apr. 26; 1887.

Fig. 24/

Witnesses- Inz/enwrs: {fiw aha/M W4 I Wm 6 W (No Model.)

' 14 Sheets-Sl1eet 8. W. A. LORENZ &'W. H. HONISS. PAPER BAG MACHINE. N0. 361,951.

PatentedApr. 26, 1887.

fiwen tors- (No Model.) 14 Sheets-Sheet 9.

W. A. LORENZ & W. H. HONISS.

PAPER BAG MACHINE.

.No. 361,951. Patented Apr. 26, 1887.

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(NoModeL) i v 14 Shets-Sheet 10. W. A. LORENZ &. W. H. HONISS.

PAPER BAG MACHINE.

Patented Apr. 26, 1887.

Wtnesay fnveniors (No Model.) 14 She'etsSheet 12.

W. A. LORENZ & W. H. HONISS. PAPER BAG MACHINE.

No. 361,951. Patented Apr. Z6, 1887.

117 2 In uwz 4'0 rs M @QZB/MLMQ r (No Model.) 14 Sheexts8heet 13.

W. A. LORENZ & W. H. HONISS.

PAPER BAG MACHINE.

,951. Patented Apr. 26, 1887.

WILD L 66888 (N0 Model.)

14 Sheets-Sheet 14. W. A. LORENZ 81; W. H. HONISS.

PAPER BAG MACHINE.

UNITED STATES PATENT OFFICE.

WILLIAM A. OR N AND WILLI M H. HONISS, or HARTFORD, CONNECTI- onr, ASSIGNORS TO FELIX w. L'EINBAGH AND CLARENCE A. woLLE,

BOTH or BETHLEHEM, PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIPICATIQN'forming part of Letters Patent No. 361,951, dated April 26, 1887;

Application filed October 18, 1886. Serial No.'216,504. (N model.)

I 0 all whont it may concern.

Be it known that W6,WILLIAM A. LORENZ and WILLIAM H. HoNIss, of Hartford, Connecticut, have jointly invented a certain new 3 and useful Paper-Bag Machine, of which the following description and claims constitute the specification, and which is illustrated by the accompanying fourteen sheets of drawings.

This machine automatically manufactures ing one end opened up into a box-like form.

Figs. 7 and 8 are side and plan views of the 20 blank, showing the box-like form partially folded down into a shape which we term the diamond. Figs. 9 and 10 show side and plan views of the same fully folded down and lines of paste applied to the diamond." Fig.

25 11 is a side view of the blank,tlie diamond being shaped to a curve, and the rear flap being 7 partially folded over. Fig. 12 is a plan of the blank,showing the second flap fully folded over on the diamond. Fig. 13 is a plan view,

0 showing the'first flap folded over ontothe second flap, thus completing the bag. Fig. 14 is a perspective View of the bagfnlly opened up.

Fig. 15 is'a side view of a portion of the machine which draws forward the tucked paper 5' tubing and folds the blanks as far as the shape shown in Fig. 6. Fig. 16- is a plan thereof. Fig. 17 is a section on the line a b of Fig. 15, looking to thelelt' Fig. l8is a section of a portionof Fig. 16, and is taken on the longi- 4o tudinal center cd of the machine. Fig. 19 is an end view of the right-hand part of Figs. 15 and 16. Fig. 20 shows portions of Fig. 19, butin another position. Figs. 21 and 22 show plan views of the upper parts of Figs. 19 and 5 20, together with the blank at two different stages in the folding. Fig. 23 is a section of Fig. 15 on the line cf. Fig. 24 is a plan view 1 of the remainder of the nachinefwhich folds the bag-blank from Fig; 6 to completion. Fig.

25 is a sect-ion on line in it .Of Fig. 24. Fig. 26 0 is a section of Fig. 25 on the line g h: Fig. 27

is an end view of a portion of Fig. 25,1ooking to the left on the line ij. Fig. 25 is an en.- larged section of Fig. 25 on the linek Z, showy ing a portion of the machine'and folded blank. 5 5 Fig. 22 shows the same parts as in Fig. 28, but in a more advanced position. Figs. 30 and 31 are side views of a portion of Fig. 25, showing the operation of flap-folding. Figs. 32

and 33 represent a modification of the blankfolding portion of Figs. 15 and 19,and are side and end views, respectively. Fig. 34 is an-. other modification of the same. Figs. 35 and '36 represent a modification of the flap-folding.

Fig. 37 represents a. side view of anv devices. other modification of the same upon a reciprocatingcarr'iage. Figs. 38and 39 represent side views in two positions of another modification of the same. Figs. 40 and 41 represent side and planviews of another modifica- 0 tion of the same. Figs. 42 and 43 represent side views in two positions of another modification of .the sanie. Figs. 44, 45, and 46 mp. resentjside views in two positions and an end view of another modification of the same. Fig. .7 5 47 is an enlarged view of a portion of Fig. 44. Figs. 48 and 49 are front and sectional plan views, respectively, of a modification of the sweeper apparatus, the latter being taken on the line 3 t of Fig. 48.

For greater clearness the following gears are not shown in full in side view, but have'parts broken away or teeth omitted, namely: 21, 22,

3, and two longitudinal slits, 4 and 5, a lip, 6, 9o

and a recess portion, 7, the tucks extending the entire length of the blank,-and the slits extending only a short distance'into one end thereof, as shown in Figs. 1 to 3. The form which we call the box is that shown in Figs. 5 5 and 6, and is marked with the numeral 8. The form which we'call the diamond is that shown in Figs. 7 to 10, and is marked with the numeral 9. The ends of the diamond are called flaps by us, that marked with the numeral being called the first flap, and that marked with the numeral 11 the second flap.

The numeral 12 indicates the place where one side of the diamond laps over the other side,'in' order to prevent paste from entering the bag and to make the bag smooth on the inside of its bottom. Lines of paste 13 are placed on both sides of the lap 12, as shown in Fig. 10. The second flap,'] .1, is folded over on the middle rectangular portion of the diamend in Fig. 12, and the first flap, 10; is folded over upon the second flap, as shown in Fig. 13, and the bag is thus completed.

In this machine tucked paper tubing is drawn from'a former and is delivered to and gripped upon a traveling folding-bed, and is separated into blanks at each stroke of this bed. This bed,'as weconstructit, is arocking one, and is provided with suitable folding apparatus for making the primary bottom folds upon the bag. From this foldingbed the partially-folded bag is delivered by suitable mechanism to gripping-rolls, which pass it to a second traveling folding bed/upon whichthe pasting and flap folding are accomplished. This second bed is an endless one as we prefer to construct it, and is provided with clamping and folding apparatus, as herein set forth. The combinations of mechanism with these folding-beds form the most important parts of our present improvements, and they may be greatly modified in form and arrangement-,and very much in their details, without departing fromour' invention.

In the principal figures the first traveling folding-bed is represented as supported upon a central camcarrying pivot, as shown in Fig.

The second traveling bed is shown as supported upon a central shaft, with which it re- ,volves, as shown in Fig. 25, and this bed is represented as carrying two pairs of retracting-fingers, being arranged to act in succession from the inside to the outside of the endless folding-bed. Beyond this bed are shown flapfolding'blades and rolls for flattening folded bags.

We will first describethat section of this paper-bag machine which draws the tucked paper tubing'from the former and delivers it to the traveling folding-bed, together with the mechanism for severing the tubes into bagblanks.

InFigs. 15, 16, and 17, Sheets 2 to 4, the

' nume'ral15 represents the driving-pulley by which power is communicated to this machine, and 16 is a loose pulley adjacent thereto. The pulley 15 is fastened to a shaft, 17,

which has hearings in two uprights, 18 and 19, these latter being fixed to the bed 20 of the machine. A driving-gear, 21, is fixed to the shaft 17 and meshes into a gear,.22, upon the shaft 23, upon which a hand-wheel, 24, is fixed. Upon the shaft 23 is fixed a gear, 25, meshing into an intermediate gear, 26, turning upon a stud, 27. This gear 26 meshes into two gears, 28 and 29, which turn upon shafts 30 and 31, respectively.- The gears 28 and 29 mesh into gears 32 and 33, respectively, which turn upon shafts 34 and 35. To the gears 28 and 32 are secured the drawing-rolls 36 and 37, respectively, which also run upon the shafts 30 and 34, respectively. These rolls are narrower than the tucked tube, and are also reduced in diameter in the middle, forming two annular projections,which press upon the tube between its edges and the bottoms of the inwardlyprojecting tucks, permittingthese to preserve their-roundness and elasticity. Pressure is exerted upon the upper drawing-roll',37, through the cam-handles 42 and 43, by means of springs 44 in the'caps 46 and 47, attached to the up rights 18 and 19. The cam-handles 42 and 43 extend into the caps 46 and 47 and into the uprights 18 and 19 and press upon arms 48 and 49, in which is supported the shaft 34, and which arms are pivoted, at 50, to the uprights 18 and 19. The cam-handles 42 and 43 may be swung away from over the arms 48 and 49,

permitting the roll 37 to be swung back into the dotted position 52, so that the tube 57 may be threaded or drawn over the knife 58 with.

ease. Pressing-rolls 53 and 54 are attached to the gears 29 and 33 and revolve upon the shafts 31 and 35, respectively. Pressure is exerted upon the upper shaft by means of springs 55 in the caps 46 and 47.

To the left of the drawing-rolls 36 and 37 is shown a. portion of the former 56, with the tucked paper tube 57 upon it. The former 56 has projecting from the forward end thereof (within the tucked paper tubing 57 a formcrknife, 58, which extends centrally between the rolls 36 and 37 and 53 and 54. This knife is T-shaped, being of the width of the tube between the pressing-rolls, and being narrow where it passes between the rolls 36 and 37. A hole, 59, is made in said knife 58, to allow the rolls 53 and 54 to press the tube. The knife 58 extends beyond the rolls 53 and 54, and its front is suitably serrated, as shown, for instance, in Fig. 17.

Above the former-knife 58 and the tube which envelops the same there is placed a lip-knife, 60, (fastened to the uprights 18 and 19,) whose serrated front edge. is preferably curved at the sides, and should be placed a little to the rear of the front of the formerknife 58. In front of the two knives 58 and 60 is shown a striker, 61, which is revolved by means of a shaft, 62, running in a bracket, 63, fixed to the upright 19. The shaft 62' is driven by means of a bevel-gear, 64, fixed thereto, which gear meshes into a bevel-gear, 65, upon the shaft 66. This shaft is driven by a gear, 67, meshing into the driving-gear 21. Upon the shaft 66 is secured an arm, 70, carrying two slitting-knives, 71 and 72. 'The former 56 is provided with two slots, 73 and 74, to allow the slitting-knives to pass into it.

The mechanism fpr imparting an oscillating ICO motion to the traveling folding-bed will now be described, together with the preferred form of mechanism for driving the gripping or pressing plate upon this bed. I

Upon. the shaft 66 is fixed the crank-disk 76, carrying a crank-pin, 77,which holds one end of the connecting-rod 78, the other end of which rod is. pivoted upon the stud 79, attached to a rocking or reciprocating carriage, 80. carriage vibrates upon the shaft 81 in brackets 82 and 83. Upon this shaft revolve two gears. 85 and 86, meshing into two gears 87 and 88, fixed to the shaft 89 in the bracket 90. Meshing into the gear 85 the gear 91 is shown upon the stud 92, the latter gear meshing into the intermediate gear, 93, upon the stud 94, this gear meshing into the gear 95 upon the shaft 23.

Upon the upper part of the carriage 80 there is a bag-blankclamping apparatus, consisting of a presser-plate, 98,.which will be seen by referring to Figs. 15, 16, 19 to 23, Sheets 2 to 6, and which has a vertical motion to the dotted position shown in Fig. 18. This presser-plate is secured to two brackets, and 101, which receive vertical motion by means of two presser-arms, 102 and 103,which" are'fixed to a rocking shaft, '104, which arms carry pins 105 and l06,whieh enter the brackets 100 and 101. To the lowerend of the bracket 100 a link, 107,- is attached, pivoted at 108 to the carriage 80, which gives the presser-platea parallel motion. To the shaft 104, at the outer end-of the'carriage 80, there is attached an arm, 109, to which is pivoted a connecting-rod, 110, connected at its other end to a swinging arm, 111, which arm rocks upon a stud, 112, fastened to the connecting-rod 78. On the swinging arm 111 a stud, 113, is fixed, which holds the connecting-rod 110, and upon its-inner end holds the roller 114, which runs in a cam-groove, 115, in the crank-disk 76, giving a vibrating motion to the arm 111 as the crank-disk revolves, and,through the arm 111 and intermediate parts, imparts a vertical motion at suitable intervals to the presserplate 98.

The various mechanisms attached to the traveling folding-bed, as we preferto construct them, will 'novTbe described, They comprise a tuck -entering motion, a bladefolding motion for making the primary folds upon the bottom of thebag, together with a lifting-motion for holding a part of the bagbottom. I V

' Carriage 80 has two cars, 118 and 119, carrying fixed studs 120 and 121, upon which are placed the two rocking. tuck-levers 122 and 123,. These'levers are-provided with studs 124 and. 125, ca-rrying cam-rolls 126 and 127,

which run iii the cam-grooves 128 and 129 of cams 130 and 131, which cams are attached to the gears 85 and 86, running upon the shaft 81 at both sides of the carriage 80. To the upper ends of these tuck-levers 122 and 123 are secured tuck-blades 132 and 133, which have This forwardly and backwardly moving,

which oscillate upon studs 120 and 121.

triangular ends projecting inwardly toward the center of the machine, and these blades receive a reciprocating motion in and out from the carriage 8021s the cams 130 and 131 revolve. In the upper ends of the tuck-levers 122 and 123 are placed two shafts, 134 and 135, to which are secured box-blades 136 and 137, which also have triangular-shaped ends. These blades 136 and 137 are operatively-connected with a cam on shaft 8],, and receive therefrom a rotary reciprocating motion of about one hundred and eighty degrees, as shown in Figs. 16.and 21, respectively. This movement is attained by means of connecting devices, as follows: Pinions 138 and 139, fixed on the boxblade shafts 134 and 135, are driven by means of racks 140 and 141, which slide in casings attached to the upper ends of the tuck-levers.

Those racks are operated by means of connecting-rods 142 and 1.43, which are connected at the pivots 144 and 145 to oscillating levers 146 and 147.. These oscillating levers swing upon the hubsof the tuck-levers 122 and 123, (Seen best in section in Fig. 23, Sheet 6.) The opposite ends of theoseillating levers146 and 147are bevel-sectors, which mesh into bevelsect-or arms 148 and 149, fastened to the shaft 150,wl1ich oscillates in cars in the carriage 80. To the outer end of the shaft 150 is secured the arm 151, carrying a pin, 152, upon which blades 136 and 137. The tuck-levers 122 and' 123and the levers 146 and 147 are all held upon the studs 120 and 121 by meansof collars 156 and 157.

The tuck-levers 122 and 123 receive the proper oscillating motion from the cams 130 ice and 131 at suitable intervals, thus'driving the blades attached to their upper ends to-and from the carriage. The levers 146 and 147 also receive a proper oscillating motion from the cam at suitable intervals, transmitting an oscillating mot-ion to the box-blades 136 and 137, allot which motions occur during the rocking motion of the carriage 80.

From the front of carriage 80 two ears, 160 and 161, project, between which a sector, 162, is pivoted upon a stud, 163. end of the sector 16211181818 attached a lifterplate, 164, which is curved at its forward end and'which receives oscillating motion by means of the sector 162, meshing with and driven by the sector 1.65. This latter sector is fastened to a shaft, 166, swinging in a, projecting bracket, 167, on the carriage 80. To the other end of the shaft 166 is attached an arm, 168, which carries a pin, 169, and a roller,

170, which roller engagesin a cam-groove, 17.1, in the cam 172, which cam is attached to the cam 131, and revolves with it and transmits an oscillating mot-ion to. said lifter-plate 164,

To the upper proper cohold up and guide the bag-blank intothe gripper-rolls described below,

The mechanism for drawing down the par- I tially-folded bag into the diamond'shape and delivering it from the first traveling bedto the second traveling bedwill now be taken up.

' This apparatus includes besides a roll or rolls for pressing along the partially-folded blank a sweeper having reciprocating (by which term we include rotary reciprocating) fingers op-. erated simultah'eously in opposite directions during the stroke of the sweeper. Said sweeper may be greatly modified as to its structure within the scopefof our invention, and it is shown in two forms, of which the preferred form is incorporated in the principal'views of them'achine. Instead of-the two gripper-rolls one roll having thereon gripper-fingers may be employed to pass along the bag-blank to the second folding-bed, or the said blank may be delivered directly to this latter bed, as

-' shown in ourUnited States Patent No. 331, 722, dated December 1, 1885.

Arranged in front of the rocking carriage 80 are shown two upper gripping-rolls, 175 and 176, (see Figs. 24 to 26,)placed ahovetwo lower gripping-rolls, .17 7 and 1.78, and in front of these gripping-rolls is shown the cylinder 180, above which are represented pasting de- 3 vices, and in front of which are shown flapfolding devices, all to be hereinafterexplained.

The cylinder 180 is fixedto a shaft, 181,

which revolves in uprights 182 and '183, at-

' 189 and 190, placed in grooves in the uprights 182 and 183. These boxes are supported by spiral springs 191 and 192 in the uprights 182 and 183. -.To the other end of the shaft 188 is attached another gear, 194, and meshing into'the two gears 194 and 1871are shown two small gears, 195 and 196,-fastehed toshafts 197 and 198, which run in brackets 199. and T 200, and carry the two upper gripper-rolls, .175 and 176, the brackets'199 and 200 being fastened to the uprights 182 and 183. By this arrangement of the shaft 188in boxes 189 and 190, together with the spiral springs 191 and 192,-th'e lower gripper-rolls, 1.77 and 178, are

pressed upward against, the upper gripperrolls,'- 175' and 176. Attached to the upper ends of the brackets 199 and 200 is shown a j rod, 203, upon which a sector-lever, 204, oscil lates, one of whose ends terminates in an min,

205, carrying two sweeper-shafts, 206 and 207,

whose lower ends are. ,bent at about right an- 65.

gles to form thesweepenfingers 206and 207, and towhoseupper' ends are fastened sect-orpiniohs 208 and 209,.respectively. The sectorpinion 208 has an arm upon which a stud, 210,

is fixed, upon which a roll, 211, is shown, en-

gaging, in-a cam-groove, 212, of the cam 213, fixed on rod 203. As the arm 205 is oscillated the sweeper-shafts 206 and 207 receive a rotary reciprocating motion, being vibrated by means of the roller 211, working in the cam 213. The arm 205 also carries a plate, 214, (see Fig. 26,) whose functions will be hereinafter described. The arm 205 derives its oscillating motion from the sector 204, meshing -into a sector-lever, 215, carried on the stud 216, fastened to the upright 183. The other end 'of the lever 215 carries a stud, 217, and a roll, 218, engaging in the cam-groove 2190f a cam, 220, on shaft 221, which shaft runs in the upright 183, and is driven by a gear, 222, meshing into the gear 223 on shaft 224, the latter gear meshing into the gear 184, as before described.

A plate, 226, is shown in Figs. 24 to 26, encd to an arm, 227, and having a vibratory motion with it upon a hub, 228, of the bracket 200. At-the other end of-the 31111227 is shown a sector-gear, 229, meshing into a sector-arm, 230, fastened to a shaft, 231, inthe upright 183. To the other endJof the shaft 231 is fastcued the arm 232, carrying the stud 233, and

the roller 234, engaging in the cam-groove 235 This cam236 communicates the proper vibrating motion -to the plate 226. The plate 226 has two extensions reaching 'to both sides of the upper gripper-rolls, 175 and 176, and over the lowcr'gripper-rolls, 177 and 178. Between fast- .ot' a cam, 236, and fastened to the shaft 188.

these upper two rolls, and extending beyond them, are shown two guides or fingers, 237 and 238, which are secured to a rod, 239, fixed in the uprights 182 and 183.

We will now describe various mechanisms connected with the second traveling folding-bed as we prefer to construct them. They comprise paste-applying devices,

creasing and gripping apparatus, and flapfolding devices operating to retract the bag. upon the traveling folding-bed, which devices form an important feature in our invention.

Above the cylinder 180, and upon the shaft 224, the pastor-roll 242 is soplaced as just to clear the cylinder 180. The roll 242 has an extension, 243, forming two paste-applying the operation of the I surfaces, which lengthen the. central paste-applying-surfaces of the roll 242. laste is applied to these surfaces by a paste-sector, 244,

fastened to the shaft 221, which receives paste "front a distributing-roll, 245, upon the shaft 246, whichruns in the upright 183, and is driven by a gear, 247,, meshing into the-gear 222. Paste is taken from a paste dish, 248,. supported by a rod, 249, fastened to the upright 183. The paster-roli 242 carries two creasing-blades, 2'51 and 252, which are as wide as the cylinder 180. The paster-roll 242 also carries two presscrs or sector-rolls, 255 and 256, the diameter "of which is a little larger than that of the roll 242, being just half the diameter (or other aliquot part) of the cylinder 180, and when over this cylinder just touching it.

The cylinder 180, owingto its double size,

as stated, is provided with duplicate sets of ranged a'pair of yieldingly-held grippers, 259

and 260,which are secured to a shaft, 261, that oscillates in hearings in the cylinder 180.

Said grippers 259 and 260 project through holes .in the rim of the cylinder 180, and are bent so as to reach over and press upon the outer circumference of this cylinder. This pressing is effected by asmall spring, 262, which rests upon the arm 263, attached to the shaft 261 at its outer end. The grippers 259 and 260 are raised and lowered at suitable intervals by means of the roller 265 upon the arm 263 coming in contact with thecams 266 and 267. These cams are securedto a hub, 268, which is an extension of the upright 182, and through whose center the shaft 181 revolves.

- In the cylinder 180, and to the rear of the second creasengroovc, 258, there is placed in the cylinder a shaft, 270, extending through the cylinder and carrying on both sides thereof I a pair of take-up arms or retracting-fingers, 271 and 272,whose outer ends are bent at right angles and extend into recesses 273 and 274 in the cylinder 180. In Fig. 24 one of these arms, 272, is omitted for greater clearness, the shaft 270 being broken off a little beyond the edge of the cylinder. These ends of the arms 271 and 272 are represented inside the circumference of the cylinder 180, and are moved outward beyond its circumference at proper intervals by means of an arm, 275, fastened to the shaft 270. This arm carries a stud, 276, and a roll, 277, running in acam-groove, 278,

' of a cam, 279, shown clearly in Fig. *25, where the web 281 of the cylinder 180 is shown broken away. The eam 279 is omitted in Fig. 24 for greater clearncss, but is shown in Figs. 25, 27, 30, and 31, being secured to a hub, 282,which forms an extension ofthe upright 183. As the cylinder 180 revolves the cam 279' transmits motion to the take-up arms 271 and 272, giv

motion at proper interclips, 285 and 286, are placed at an angle on the sides of the cylinder and oscillate upon before described;

studs 287 and 288, which are secured' to cars 289 and 290. attached to the cylinder 180. The outer ends of the side clips, 285 and 286, are bent-inward toward the cylinder, and each of the clips has two projections, the shorter ones being represen ted by the numbers 291 and 292, which projections extend a little in advance of the second creaser-groove, 258,and when closed over the cylinder 180 reach overits edge a short distance. The longer projections, 293 and 294, extend farther inward and form guidingfingers, which, when swung over upon the cylinder 180, reach a little to the rear of the second creaser-groove, 258, and considerably inward from the edge of the cylinder. These projections 293 and 294 are beveled backward,

being open at the front, and being closed at the back by corner-pieces 295, reaching to within a short distance of the surface of the cylinder, as shown clearly in Figs. 30 and 31. These clips 285 and 286 receive an oscillating motion at their inner end by means of studs 296 and 297 and rollers 298 and 299, which engage in cam-grooves 300 and 301 incams 302 and 303, which cams are fixed to the hubs 268 and 282 of the uprights 182 and 183. Cam 303 is omitted in Fig. 24 for greater clearness of illustration. These cams 302 and 303 are constructed to communicate the required oscillating motion to the side clips, 285 and 286, at proper intervals during the revolution of the cylinder 180.

Operating in connection with the second traveling folding-bed are shown flap folding anddelivering apparatus, which operate to do the final flap-folding and todeliver the bags from the machine.

Arranged in front of the cylinder 180 upon the shaft 310, which shaft rests in bearings in the two uprights 308 and 309 on the bed 20 of the maehine, are shown three folder-arms, an

inner one, 311, and two outer ones, 312 and 313,

all of whose ends are bentand terminate in blades 314, '315, and 316, respectively. These blades receive an oscillating motion by means of a sector, 3 17, fastened to the shaft 310,which meshesinto a sector-ended lever, 318, which oscillates upon a stud, 319, fixed to the upright 309. At the other end of thelevcr 318 is shown a stud, 320, and a roller, 321, which engages in the cam-groove 322 of a cam, 323. This cam Y 323 is fixed to ashaft, 324, which turns in the V uprights 308 and 309, and is driven by a gear,

325, meshing into apinion, 326, which is drive by a shaft, 327, running in the upright 183, b means of a gear, 328,- meshing in the gear 184, The shaft 324 carries a roll, 329, above which is shown another roll, 330,

:upon a shaft, 331, running in the uprights 308 and 309. The "shaft 331 is driven by a gear,

332, meshing into the gear 325, before. de-

scribed. .The rolls 329 and 330 are arranged so as just to clear one another.. Between the cylinder and the rolls 329 and 330 are shown two other rolls, 335 and 336,which are narrow, and which are secured to shafts 337 and 338,

which run in the uprights 308 and 309. These shafts are driven by gears 339 and 340, respectively, the former meshing into the gear 326 and Continuous tucked paper tubing 57.,while be;

ing manufactured upon a former, 56, by apparatus substantially as shown in our Patent No. 331,722, dated December 1, 1885, is drawn forward into the machine by the drawing-rolls 36 and 37, and passes between the pressingrolls 53 and 54 and under the lip-knife 60. In its progress forward from the former through these rolls, the tube 57 envelops the formerknife 58, the upper ply, 14, Fig.3, of' the tube passing over the knife 58, while the lower ply of the bag and the two plies of the tucks pass below it. At the same-time the slitter-knives rotate and cut slits 4 and 5 into the tube, doing this once for each bag-length required. The tube is fed forward from the knife 58 onto the upper portion of the firsttraveling folding bed or carriage, 80, during its backward stroke, while the presser-plate 98 is elevated to its upper position, as shown in Fig. 18. The presser-plate 98 descends -upon the tube and clamps it to the carriage 80 at approximately the time when the latter commences its forward stroke, a sufficient amount of this tube being fed beyond the forward end of this presser-plate to form a bag-bottom. The forward motion of the carriage being at this point slower than that of the tube 57, the tube is bent downward, as shown in Fig. 15, forming a slackness therein,until the striker 61 passes in front of the knives 58 and 60 and takes up this slack and breaks or tears off a bag-length, all of which is done once for every revolution of the crank and every stroke of the carriage. The taking up of the slack by the striker 61 in this manner causes the paper to stand at an angle approaching ninety degrees to the cuttingedges of the two knives, so that as the striker passes them it tears off the tube with great ease andproduces a clean break. The position of the parts at the beginning of the breaking is shown in Fig. 18. The shape of the cut produced is shown in Figs. 1 and 2 by the lip 6 "m theend of the bag and the recess 7 in the oncoming tube. The breaking off is so timed as to bring the slits 4 and 5 at the forward end of the broken-off tube 57. l

. During the backward stroke of the carriage 80, and while the tube passes under the presser-plate 98, the tuck-blades 132 and 133 and the box-blades 136 and 137 are rocked forward into thetuoks 2 and 3 of the paper tube, as shown in Figs. 15, 16, and 19. These blades are enabled to enter the tucks of 'the tube on the backward strokeof the carriage 80, because the upper and lower plies of the tucks of the blank spring apart. This springing apart occurs because the drawing rolls 36 and 37, before described, have not flattened the bot- 7o toms of the inwardly-projecting tucks 2and 3, nor the edges of the blank, thus leaving the tucks elastic and-self-opening. The entering of the blades on the backward stroke of the carriage has the important advantage of gaining time for making the primary fold, which is thereby readily completed before the carriage finishes its forward stroke. By this 7 means the machine has a much greater capacity with less velocity of movement in many of 8o its parts. After these blades have entered, and after the presser-plate 98 has gripped the tube, and during the forward motion of the carriage, the box-blades 136 and 137 are turned over backward, thus folding the forward part Q of the bag, as shown in Fig. 21. During the forward motion of the carriage the sweepershafts 206 and 207 and the plate 214 enter the forward end of the box 8, andafter the box has been folded, as shown in Fig. 21, they swing forward-and draw the box 8 down into the diamond shape 9, as shown in Figs. 22, 24,

and 25, the bent feet of the sweeper-shafts being turned outward, as shown in Figs. 24 and p 28. During this operation of forming the dia mo'nd thelifter-plate 164 is brought upward, pressing the forward end of the diamond 9 against the plate 214, thus holding it securely.

At the same time the plate 226 descends upon the flattened diamond and prevents it from I00 springing upward as the bag passes forward. The sweeper-shafts 206 and 207 then draw the diamond forward into the bite of the gripping, rolls and 177 and 176 and 178. The pressen. plate 98 is then elevated a little, the lifter-plate 5 is dropped a little,-and the tuck-levers 122 and? 123, carrying the four blades, withdraw froml the bag, taking the position shown in Fig. 20, after which the box-blades revolve back to the position shown in Figs. 15 and 19. The 0 sweeper-shafts 206 and 207 are then driven forward with greater speed than that of the bag, and the bent ends 206' and 207 thereof are turned inward'and withdrawn from the bag, as shown in Fig. 29. As the bag passes 5 forward it is flattened by passing under the rolls 175 and 176 and plate 226 and over the rolls 177 and 178, the rearward half of the diamond being fully flattened between the plate 226 and the plate 98. It then passes forward I20 under the f ngers 237 and 238 and upon the cylinder 180, the forward end of the diamond being gripped by one of the pairs of grippers 259 and 260, which draws the bag forward 4 under thepaster-roll 242, which applies the 5 paste to the diamond. The ereaser-blade 251 enters the recess 257 in thecylinder 180 and creases the bag across the line 0 1), Figs. 10 and 12, to facilitate subsequent folding operations. The creaser-blade 252 then enters the 3 groove 258 in the cylinder 180 and creases the bag across the line q a", Fig. 10. This causes the second flap, 11, to rise into the position shown in Figs. 11, 25, and 27. While 

